A:
Positive:
1 x 4012760155 x 802552037 x 5732514535 x 114650291367 x 2935456835 x 587098387 x 478459569 x 41935
Negative:
-1 x -401276015-5 x -80255203-7 x -57325145-35 x -11465029-1367 x -293545-6835 x -58709-8387 x -47845-9569 x -41935
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 401,276,015, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
| 1 | 401,276,015 | |
| -1 | -401,276,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 401,276,015.
Example:
1 x 401,276,015 = 401,276,015
and
-1 x -401,276,015 = 401,276,015
Notice both answers equal 401,276,015
With that explanation out of the way, let's continue. Next, we take the number 401,276,015 and divide it by 2:
401,276,015 ÷ 2 = 200,638,007.5
If the quotient is a whole number, then 2 and 200,638,007.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 401,276,015 | |
| -1 | -401,276,015 |
Now, we try dividing 401,276,015 by 3:
401,276,015 ÷ 3 = 133,758,671.6667
If the quotient is a whole number, then 3 and 133,758,671.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 401,276,015 | |
| -1 | -401,276,015 |
Let's try dividing by 4:
401,276,015 ÷ 4 = 100,319,003.75
If the quotient is a whole number, then 4 and 100,319,003.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
| 1 | 401,276,015 | |
| -1 | 401,276,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 1,367 | 6,835 | 8,387 | 9,569 | 41,935 | 47,845 | 58,709 | 293,545 | 11,465,029 | 57,325,145 | 80,255,203 | 401,276,015 |
| -1 | -5 | -7 | -35 | -1,367 | -6,835 | -8,387 | -9,569 | -41,935 | -47,845 | -58,709 | -293,545 | -11,465,029 | -57,325,145 | -80,255,203 | -401,276,015 |
Here are some more numbers to try:
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